Figure 43 the Figure Shows Two Objects of Masses M₁

question 18

Multiple Choice

Figure 4.3 The figure shows two objects of masses m₁ and m₂, placed on two inclined surfaces of different angles è₁ and è₂. The connection between masses is a taut, massless string running over a massless and frictionless pulley.
-In Fig. 4.3, masses are m₁= 10 kg and m₂ = 15 kg; incline angle is è₁ = 30°. What is the value of è₂ if the system is NOT moving?

• A)71°
• B)49°
• C)41°
• D)20°

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Definitions:

Criterion-related Validity

The extent to which a measure is related to an outcome or criterion, indicating how well the test predicts a specific aspect of a person's behavior or performance.

Mechanical Aptitude

Mechanical aptitude refers to a person's ability to understand and apply mechanical concepts and principles, often assessed for careers involving machinery or engineering tasks.

Criterion-related Validity

The extent to which a measure is associated with an external criterion or outcome, assessing the test's predictive or concurrent accuracy.

Content Validity

The extent to which a test measures all aspects of the concept it intends to measure.